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QOTW: Genius

“Genius is long patience,” but it must be organized and intelligent patience. One does not need extraordinary gifts to carry some work through; average superiority suffices; the rest depends on energy and wise application of energy. It is as with a conscientious workman, careful and steady…
Sertillanges, The Intellectual Life

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Reaction: Interoperate or Die

the-point-fred-wolf-1Ethan has an excellent post up on Interoperate or Die. Herewith, a few thoughts in response.

From my perspective, the importance of open standards in the world of network engineering can hardly be overstated. As networks become more complicated (or complex, depending on what word you want to use), having consistent interfaces will become increasingly important. Think of the old IP model — every transport runs on top of IP, and IP runs on top of every physical/link layer. Using IP as a “choke point” built a “wasp waist,” a single API everyone on both sides of the narrow point in the protocol layer could talk to.

in recent years, we’ve forgotten the wasp waist. We’ve built everything over HTTP, and everything over Ethernet over IP, and everything over GRE over IP, and… The entire stack, above IP, is a hornet’s nest of convoluted caverns and side halls pointing, apparently, everywhere at once (like the guy from the forest in The Point, above).

If you think of IP as an API (which is really what it is), the point is to have a single layer API between any two interacting systems. This creates a clean interaction surface that helps you to Continue reading

Out with the old: Make removing old technology part of your culture

Friday afternoon, late, and the new system is finally up. Users are logged in, getting their work done, and you’ve just received an email from the CTO (your boss’ boss’ boss’ boss, probably), saying what a good job the team did in getting things up and running so quickly. For once, in fact, the system went in perfectly. There was no close to team breakups over which technology or vendor to use; there were very few unexpected items that crept into the budget, the delays were minimal, and you even learned a couple of new skills to top it all off.

Wonderful, right? The perfect unicorn project.

But before you break open that bottle of bubbly (or whatever cold beverage is your choice), or maybe pop up a bowl of popcorn and sit down to a long deserved break binge watching the shows you missed pulling this thing together, you need to ask one more question:

Did you strip and sand first? Or did you just paint right on top?

Or don’t you remember the time you tried to paint that old trailer that had been sitting in your back yard for ages? Sure, it was covered in rust, dirt, Continue reading

How the Internet Really Works

Way back in April of 2014, I started a series over on Packet Pushers called “How the Internet Really Works.” This is a long series, but well worth reading if you want to try and get a handle around how the different companies and organizations that make up the ecosystem of the ‘net actually do what they do.

Overview
DNS Lookups
The Business Side of DNS (1)
The Business Side of DNS (2)
Reverse Lookups and Whois
DNS Security
Provider Peering Types
Provider Peering and Revenue Streams (1)
Provider Peering and Revenue Streams (2)
Standards Bodies
IETF Organizational Structure
The IETF Draft Process
Reality at the Mic (Inside the IETF, Part 1)
Reality at the Mic (Inside the IETF, Part 2)
Reality at the Mic (Inside the IETF, Part 3)
Internet Exchange Points
That Big Number Database in the Sky (IANA)
NOG World (Network Operator Groups)
The Internet Society

The slides that go with this set of posts are available on slideshare, as well. This set is in Ericsson format, but I have older sets in “vendor neutral” formatting, and even cisco formatting (imagine that!).

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